Whirlpool tub



FIG. 1 is a top plan view of a whirlpool tub, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right end view thereof;

FIG. 5 is a left end view thereof; and,

FIG. 6 is a perspective view thereof.

The bottom view being plain and unornamented. 

The ornamental design for the "whirlpool tub", as shown and described. 